Regarding sterotyping of Asians as techies, I think a lot of that is because the Asians that come to the US from China and Japan tend to be engineers or in some technical field so Americans think all Asians are like that. I was misled by those stereotypes myself until I dated a couple of Asian girls – they were definitely not techies but they did feel some social pressure from their families to succeed financially.
I’ve noticed that of the Asians that come to the US, a high percentage of Japanese and Chinese are techies but Philipinos tend not to be techies – the women go into nursing many times and them men go into various trades.